Brick-kiln.



J. C; BOSS.

BRICK KILN. APPLICATION F ILED AUG. 10. 1911.

1,167,882. I Patented Jan. 11, 1916. I

3 SHEETSSHEET I.

PEEP HOLE J. C. BOSS. BRICK KILN.

APPLICATION FILED AUG.10,191L

Patented Jan. 11, 1916.

3 SHEETSSHEET 2.

J. C. BOSS BRICK KILN.

APPLICATION FILED Aue.10. 1 911.

Iii 726771?) COL UMBIA PLANOORAPH cm. WASHINGTON, D4 6,

barren erases ATENT rei VJ'OI-IN o. BOSS, or nLiriian'r, INDIANA.

BRICK- nnit.

Application filed August 10, 1911. Serial No. 643,415.

through one of the fire-boxes; Fig. l is a transverse section of the large or front end of the burner; Fig. 1 is a similar view through the small or rear end of the burner; Fig. 2 is an enlarged sectional plan of a part of the side wall of the kiln, exposing two of the fire-boxes, and showing one burner in plan and another in section; Fig. 3 is a diagrammatic plan of a portion of a battery in an up-draft kiln, illustrating the piping arrangement, and also the lay of the green bricks for burning; Fig. 4 is a side elevation, partly in section, of a round down-draft kiln embodying my invention; and Fig. 5 is a sectional plan of the same. a

In these drawings, two types of kilnare shown, the first illustrated in the ordinary rectangular form, in which the upward draft is represented, and the second the circular form in which the downward draft is appropriately used. The general form, and method of operation shown herein, are the same as those shown in my patent aforesaid. The improved details and their operation and effect are described hereinafter.

In the general form, the green bricks are piled in loose masses, with arches built therein, forming, with that part'in which is the burner, combustion chambers or chambers for the products of combustion, which chambers communicate, through the interstices of the green bricks, with the mass thereof, throughout the kiln section.

Referring to Fig. 1 of the drawings, A represents a section of the front permanent wall of a part of the kiln, including a fire box, a'baftle wall, and part ofthe mass of green or unburned bricks of the charge. An abutment 1 built against it supports one of the roof posts 2. At 3 is shown a section of the top of a permanent arch, which in- Specification of Letters Eatent.

Patented Jan. ii,

eludes the fire boxproper, 4, this being provided with an ordinary .door 15, suspended from the wall by'means of a rod 5. This arch 3 is one of'a series in the wall, and corresponds withthe series oftemporary arches in the charge, and with a like series in the opposite wall, which completes the inclosure or chamber containing the charge of'green bricks. Outsideof these'walls are located the main branches 6 of the air supplypipe B. I here not@' an important improvement in this kind of kiln. As shown in, my said patent, the air supply pipes are located within the area of, the kiln. In this improve: ment,as illustrated in the plan view ofFig. 3, I' have arranged the main air pipe B along the ends of the series of sections M and N (for'example), and preferably underground, and have carried "therefrom (also preferably underground), branch pipes 6 which run alongthe doublefronts of each section. From these branches feeder pipes 8 run to the hollow burners 9 located a in the permanent front walls, as shown in 2. The burners 9 are each located in a fire box 4, and are of special-and improved construction, which adapts them to the special situation and use. Theyare made of suitable fire-resisting material, and are preferably of circumferential contour shown in that in Figs. 1 and l and in the right hand 7 burner of Fig. 2, the discharge openings, which are on the under side of the burner, are progressively larger from front to rear. It will be understood that the fuel (which may be coal of a crude or cheap kind), is placed on the bottom of the fire box, and around the burner. and ignited in any convenient way, and filled in, and then the blast of air discharged downward through the openings, turns upward through the coal, sustaining the combustion, the products whereof pass into the charge or box, and thence into the extension thereof in the mass of bricksto be burned. In addition to the air passages in the bottom of the burner, which are of the main importance, a similar passage may be made at the end of the burner discharging against a larger amount of fuel between said end and the opposite Wall.

The tapering form of the burner and the progressively larger openings both operate to give an even heat throughout the length of the burner.

Above the fire box is an ordinary peep hole in the wall, and inrear of the box is a baflie or shield on each side, formed by wing walls 14%, for preventing excess of heat at those points.

It will be understood that another fire box is located, as shown in Fig. 3, directly opposite that just described, and the two are connected, when the kiln is charged, by an arch in the mass of green bricks.

It will be further observed by reference to i Fig. 2 that the side walls of the permanent fire boxes are curved outwardly from end to end, forming a box wide in the middle and narrowing at each end. This gives a larger amount of fuel at the middle of the chamber and less at the ends, which I have found advantageous in the action of the furnace in connection with this form of burner. The green brick continuations, however, from the valls 14, are carried straight from side to side. The products of combustion from the fire boxes are discharged therefrom with force into the green brick arches, and pass in even distribution through the interstices in the mass piled within the walls. The position of the air forcing device is shown at C, Fig. 3. The outside arrangement of the air pipes serves with great advantage in two ways: The pipes are more accessible for 're pairs, in case of leakage, and further, leakage in injurious and irregular manner and unobservable, into the mass of bricks, is prevented. The mass of green bricks is indicated in Fig. 1 at D. The charging and discharging doors are shown at 21, 22,

' Figs. 4 and 5 show a circular form of kiln, in which the down draft is used. In this form, the main air supply. pipe encircles the wall, and on the outside, as in the form hereinbefore described, but the branch pipes lead kilns. The charging and discharging doors are shown at O and P. The encircling underground air duct is shown at Q. It will be understood that proper regulating and shutting off valves are provided in the air ducts.

I claim as: my invention substantially as described 1. In a brick kiln, a fire chamber in the wall thereof, a hollow burner made tapering from its outer to its inner end, air passages therein on its under side, and an air feeder connecting its outer end with an outer air duct. I

2. In a brick kiln, a fire chamber in the wall thereof, a hollow burner made tapering from its outer to its inner end, air passages therein on its under side increasing in size toward the inner end, and an air feeder connecting its outer end with an outer air duct.

3. In a brick kiln, a fire chamber in the wall thereof opening to the outside and having inner discharge openings, a burner connected to an air duct outside the wall, and having downwardly discharging openings, the walls of said chamber being curved laterally in respect to the fire chamber.

In testimony whereof, I affix my signature in presence of two witnesses.

JOHN C. BOSS.

Witnesses:

I. H. VINCENT, PAUL CAMPBELL.

@opies of this patent may be obtained for five cents each, by addressing the Commissioner of- Patents, Washington, D. C. 

